Check this worksheet.
1. 1230 + 123 = 1123
2. 10 rubber ducks cost $15.00. How much does 5 rubber ducks cost?
$7.50
3. How to do long multiplication? Show an expression.
11 × 12 = 22 + 110 = 132
A. Is he correct?
B. What's the shortest expression which is not easy?
4. Power up 1
A. Money: $7.50 + $4.50 = $
B & C. Addition is like mixing colors: 125 + 225 = | + =
D. Multiplication is like repeated addition: 3 × 4 = 3 + 3 + 3 + 3 =
5. Remenber:
Addition is like mixing colors. For example, 2 + 3 = 5 is like yellow + blue = green. Mulitplication is repeated addition. For example, 3 × 2 = 3 + 3 = 6.
Amaze your friends by using these tricks!